CN111647421A - Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method - Google Patents
Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method Download PDFInfo
- Publication number
- CN111647421A CN111647421A CN202010458816.4A CN202010458816A CN111647421A CN 111647421 A CN111647421 A CN 111647421A CN 202010458816 A CN202010458816 A CN 202010458816A CN 111647421 A CN111647421 A CN 111647421A
- Authority
- CN
- China
- Prior art keywords
- fischer
- tropsch oil
- tropsch
- oil product
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1022—Fischer-Tropsch products
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
Abstract
The invention relates to a Fischer-Tropsch oil product removing and fixing device, Fischer-Tropsch oil product processing equipment comprising the removing and fixing device and a corresponding Fischer-Tropsch oil product processing method. The Fischer-Tropsch oil product removing device is provided with the feeding distributor, the oil-solid pre-separation component and the specific bag filter from bottom to top, so that solid components in Fischer-Tropsch synthetic oil products can be effectively separated through pre-separation of the oil-solid pre-separation component and filtering treatment of the bag filter.
Description
Technical Field
The invention belongs to the field of Fischer-Tropsch synthesis, and particularly relates to a settling and filtering combined Fischer-Tropsch oil product solid removal device, Fischer-Tropsch oil product treatment equipment comprising the device, and a Fischer-Tropsch oil product treatment method.
Background
The Fischer-Tropsch synthesis technology takes coal with abundant reserves in China as a raw material, converts the coal into synthesis gas through the processes of gasification, water gas shift, purification and the like, converts the synthesis gas into clean intermediate oil products such as light oil, heavy wax and the like through the Fischer-Tropsch synthesis process, and produces clean gasoline, diesel oil and high value-added chemicals through the fine processing of the intermediate oil products. Therefore, the Fischer-Tropsch synthesis technology has very important significance for developing oil substitutes.
At present, a large-scale industrialized Fischer-Tropsch synthesis device mostly adopts a slurry bed reactor, and one important operation is solid-liquid separation. The slurry bed Fischer-Tropsch synthesis process is adopted, catalyst particles are small (the particle diameter is micron level), and a certain amount of catalyst particles are carried in Fischer-Tropsch synthesis intermediate oil after the Fischer-Tropsch synthesis intermediate oil comes out of the reactor, and the intermediate oil can enter a downstream unit after the catalyst particles are separated. Otherwise, the equipment of the downstream units such as hydrogenation, rectification and the like can not operate smoothly or the catalyst of the downstream process unit is poisoned, so that the operation stability of the device is affected, and even the whole plant can not operate smoothly or even stop production. Therefore, solid particles (e.g., catalyst particles) must be removed from the intermediate oil before it enters the downstream units.
Common solid-liquid separation methods for Fischer-Tropsch oil products comprise a settling method, a filtering separation method, a centrifugal separation method, a magnetic separation method and the like. Patent CN101733045B discloses a device of slurry bed reactor solid-liquid separation, but its whole separation process is complicated, and the membrane separation equipment who especially uses very easily causes the jam in the separation application of ft oil, and regeneration difficulty, and the membrane separation area is directly proportional with catalyst content moreover, and it is great to need the membrane separation area when catalyst content is higher, and equipment investment is higher. In addition, the centrifugal separation method requires sufficient understanding of the physical properties of the raw materials, and has different separation effects depending on the physical properties. When the centrifugal separation method is used for treating the solid-containing Fischer-Tropsch wax, the separated filter residue is deposited on the inner surface of the rotary drum, and the flux is rapidly reduced along with the increase of the running time, and the filter residue is usually scraped off by using a scraper or pushed to one end of the rotary drum by using a spiral blade to be discharged along with heavy liquid. When the filter residue is scraped by the scraper, the scraper can extrude the filter residue, so that the filter residue is more and more compact, and the flux recovery capability is more and more poor; when the filter residue is pushed out by the spiral blade, the filter residue concentration is high, so that all the filter residue cannot be pushed out, the filter residue remained on the surface of the rotary drum can be squeezed, flux recovery can be limited, and the high-concentration filter residue can block a subsequent system to influence the normal operation of the system.
Due to the above problems of common solid-liquid separation means such as filtration and centrifugation, the prior industrial application often uses an auxiliary agent filtration technology to separate solid-containing particles in the fischer-tropsch oil product discharged from the slurry bed reactor, however, the technology has the following problems: the consumption of the auxiliary agent is large, the operation cost is high, the slag discharge amount is large, and the field sanitary condition is poor; the auxiliary agent is easily entrained into the filtrate to cause the content of solid particles of the filtrate to be increased; the filtering operation is generally in a batch processing mode, and the auxiliary operation occupies a long time and affects the overall processing capacity; the operation flexibility is small, the filtration pressure difference rises quickly when the solid particles of the intermediate oil product in the Fischer-Tropsch synthesis fluctuate (such as the content of the catalyst exceeds the standard), the slag discharge is frequent, and the expected filtration effect is difficult to achieve.
Therefore, there is a need to develop a device and a method for simply and effectively removing the solids in the Fischer-Tropsch oil product discharged from the reactor, so as to meet the requirement of an industrial continuous production process.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a settling and filtering combined Fischer-Tropsch oil product removing and fixing device, Fischer-Tropsch oil product processing equipment comprising the removing and fixing device and a corresponding Fischer-Tropsch oil product processing method. After entering the solid removing device, the Fischer-Tropsch oil product is settled and pre-separated by the oil-solid pre-separating component, so that the content of solid particles in the Fischer-Tropsch oil product is reduced preliminarily; then further filtering treatment is carried out through a specific bag filter so as to achieve the aim of effectively removing solid particles in the Fischer-Tropsch oil product.
One aspect of the invention provides a Fischer-Tropsch oil product removing and fixing device, which comprises a tank body and a sealing tank cover detachably connected with the tank body;
wherein, a feeding distributor, an oil-solid pre-separation component and a bag filter are arranged in the tank body from bottom to top in sequence; the bag filter consists of a filter bag and a filter bag framework, and the filter bag is sleeved outside the filter bag framework; the material of the filter bag comprises viscose fiber, polyester, nylon, polyaramide, polytetrafluoroethylene, polyphenylene sulfide, aramid fiber and/or glass fiber; the filtering precision of the bag filter is 0.5-50 microns;
the feed inlet and the purging port are positioned on the same side of the lower part of the tank body and are connected to the feed distributor in a fluid communication manner through the same channel;
the discharge port and the back flushing port are positioned on the same side of the upper part of the tank body and are connected to the bag filter in a fluid communication manner through the same channel;
the pressure detection units are respectively arranged on the channels of the feed port and the discharge port, which are communicated with the tank body, and on the outer surface of the tank body;
the temperature detection unit is arranged on the outer surface of the tank body;
the device comprises a sewage draining port and a venting port, wherein the sewage draining port and the venting port are respectively arranged at the bottom of the tank body and the top of the tank cover; and
and the outer surfaces of the tank body and the tank cover are provided with heat preservation heat tracing units.
Another aspect of the present invention is to provide a fischer-tropsch oil treatment plant, wherein the plant comprises:
a Fischer-Tropsch oil cooler;
a Fischer-Tropsch oil delivery unit connected to the Fischer-Tropsch oil cooler in fluid communication; and
according to the Fischer-Tropsch oil product removing and fixing device, the Fischer-Tropsch oil product removing and fixing device is connected to the Fischer-Tropsch oil product conveying unit in a fluid communication mode.
Another aspect of the present invention is to provide a method for removing solids from a Fischer-Tropsch oil product, wherein the method comprises:
(1) cooling the solid Fischer-Tropsch oil from the Fischer-Tropsch synthesis unit to obtain cooled Fischer-Tropsch oil; and
(2) and conveying the cooled Fischer-Tropsch oil product to the Fischer-Tropsch oil product removing device, and treating to obtain the removed Fischer-Tropsch oil product and solid particle impurities.
In the process of treating Fischer-Tropsch oil by using the Fischer-Tropsch oil treatment equipment, no auxiliary agent is added, so that the problems in the auxiliary agent filtering technology can not be caused, and the following beneficial effects are brought: the process flow is short, the number of equipment is small, and the equipment investment is saved; the integrated Fischer-Tropsch oil product solid removal device is adopted to reduce the solid content of the Fischer-Tropsch oil product through pre-separation in the treatment process, and then the Fischer-Tropsch oil product enters a bag filter which is made of specific materials and has specific filtering precision for further separation, so that the integrated Fischer-Tropsch oil product solid removal device can be suitable for treating the Fischer-Tropsch oil product with high solid content (the solid content exceeds 1000 mu g/g), and the operation flexibility of the device is improved; moreover, the specific bag filter can be subjected to back flushing operation, the interception function of the bag filter can be recovered through simple back flushing operation after the bag filter is polluted and blocked, and the service life of the filter is prolonged.
Drawings
FIG. 1 is a schematic view of a process for treating an oil containing solid Fischer-Tropsch;
FIG. 2 is a schematic diagram of an exemplary Fischer-Tropsch oil deinstallation device;
FIG. 3 is a schematic view of an exemplary feed distributor;
FIG. 4 is a schematic view of an exemplary oil solids preseparation assembly;
FIG. 5 is a schematic top view of the discharge section of an exemplary Fischer-Tropsch oil destaticizing device;
each symbol in fig. 1 represents:
1. a Fischer-Tropsch oil cooler; 2. a Fischer-Tropsch oil product storage tank; 3. a Fischer-Tropsch oil product delivery pump; 4. a Fischer-Tropsch oil product degassing device; 5. a storage tank for intermediate oil products;
101 contains a solid fischer-tropsch oil; 102, cooling the Fischer-Tropsch oil product; 103, taking the Fischer-Tropsch oil out of the Fischer-Tropsch oil storage tank; 104, taking out the Fischer-Tropsch oil from the Fischer-Tropsch oil conveying pump; 105 removing solid Fischer-Tropsch oil products; 106 intermediate oil.
Detailed Description
The solution of the invention will be illustrated below by means of an exemplary embodiment, but the scope of protection of the invention is not limited thereto.
In the present invention, unless otherwise indicated, the term "fischer-tropsch oils" refers to heavy oils and heavy waxes produced by fischer-tropsch synthesis processes. Wherein, the term "heavy oil" refers to oily hydrocarbon substances which are solid at normal temperature but liquid when heated to 40 ℃ to 50 ℃; the term "heavy wax" refers to an oily hydrocarbon material that is solid at ordinary temperatures, but liquid when heated to 85 ℃ to 95 ℃.
In one embodiment, the invention relates to a Fischer-Tropsch oil product removing and fixing device, which comprises a tank body and a sealing tank cover detachably connected with the tank body;
wherein, a feeding distributor, an oil-solid pre-separation component and a bag filter are arranged in the tank body from bottom to top in sequence; the bag filter consists of a filter bag and a filter bag framework, and the filter bag is sleeved outside the filter bag framework; the material of the filter bag comprises viscose fiber, polyester, nylon, polyaramide, polytetrafluoroethylene, polyphenylene sulfide, aramid fiber and/or glass fiber; the filtering precision of the bag filter is 0.5-50 microns;
the feed inlet and the purging port are positioned on the same side of the lower part of the tank body and are connected to the feed distributor in a fluid communication manner through the same channel;
the discharge port and the back flushing port are positioned on the same side of the upper part of the tank body and are connected to the bag filter in a fluid communication manner through the same channel;
the pressure detection units are respectively arranged on the channels of the feed port and the discharge port, which are communicated with the tank body, and on the outer surface of the tank body;
the temperature detection unit is arranged on the outer surface of the tank body;
the device comprises a sewage draining port and a venting port, wherein the sewage draining port and the venting port are respectively arranged at the bottom of the tank body and the top of the tank cover; and
and the outer surfaces of the tank body and the tank cover are provided with heat preservation heat tracing units.
In a preferred embodiment, the sealable lid is detachably connected to the can body by a flanged connection.
In a preferred embodiment, the feed distributor includes, but is not limited to, a single tube distributor, a notched distributor, a calandria distributor, a central tube distributor, a multi-annular liquid distributor, and the like, which are suitable for distributing fischer-tropsch oils.
In a more preferred embodiment, the outlet of the single-tube distributor, the notched distributor, is directed downwardly.
In another more preferred embodiment, the bottom of the distribution pipe of the calandria distributor, the central pipe distributor and the multi-ring pipe distributor is provided with drainage holes which form an angle of more than 0 degree with the horizontal direction. Preferably, the angle of the drainage holes to the horizontal is from 20 ° to 160 °, preferably from 30 ° to 120 °, for example from 45 ° to 135 ° or from 75 ° to 105 °. Preferably, the aperture of the liquid discharge hole is 3-25 mm, preferably 5-20 mm, for example 8-15 mm.
In a preferred embodiment, in order to further facilitate the accelerated settling of solid impurities, the oil-solid pre-separation assembly may be of a swash plate type structure, a baffle type structure, or the like, but is not limited thereto.
In a preferred embodiment, the filter bag frame may be a cylindrical frame, a U-shaped frame, a candle filter frame, or the like, to further facilitate processing.
In a preferred embodiment, the number of filter pockets and filter pocket frames of the bag filter is the same and is greater than 1, for example, 2, 3, 4, 5, 6, 7, 8, 9 and 10 or more. Further preferably, a plurality of bag filters may be arranged in parallel. In a preferred embodiment, the filter bag framework is made of one or more materials selected from the following: carbon steel, stainless steel, alloy steel, and the like.
In a preferred embodiment, the material of the filter bag is selected from viscose, polyester, polyaramide, polytetrafluoroethylene and/or glass fiber.
In a preferred embodiment, the bag filter has a filtration accuracy of 1 to 30 micrometers, preferably 2 to 25 micrometers.
In a preferred embodiment, the outlets of the filter bags of each row or column are connected in fluid communication to the same branch duct, and the branch ducts converge again to the same channel and are connected in fluid communication to the outfeed opening and the blowback opening. In a further preferred embodiment, a sampler is provided on each of the partial ducts before the partial ducts converge at the same channel, in order to facilitate the observation of the filtering effect of the bag filters in each row or column and to facilitate the row-by-row or column-by-column investigation in the event of problems.
In a preferred embodiment, the feed openings can be arranged in parallel or vertically, preferably in parallel, outside the vessel.
In a preferred embodiment, the discharge openings can be arranged parallel or perpendicular, preferably parallel, outside the tank lid.
In a preferred embodiment, a blowdown window may be provided at the blowdown port for observing the amount of solid particles deposited at the bottom of the tank.
The heat preservation heat tracing units arranged on the outer surfaces of the tank body and the tank cover are used for ensuring that wax in the Fischer-Tropsch oil product cannot be solidified in the Fischer-Tropsch oil product removing device, so that the flowability of the Fischer-Tropsch wax is ensured.
In one embodiment, the present invention relates to a fischer-tropsch oil treatment plant, wherein the plant comprises:
a Fischer-Tropsch oil cooler;
a Fischer-Tropsch oil delivery unit connected to the Fischer-Tropsch oil cooler in fluid communication; and
according to the Fischer-Tropsch oil product removing and fixing device, the Fischer-Tropsch oil product removing and fixing device is connected to the Fischer-Tropsch oil product conveying unit in a fluid communication mode.
In a preferred embodiment, the fischer-tropsch oil treatment plant further comprises an intermediate oil storage tank, said intermediate oil storage tank being connected in fluid communication to said fischer-tropsch oil destaticizing device.
In a preferred embodiment, the Fischer-Tropsch oil cooler may be, but is not limited to, a plate cooler, a shell and tube cooler, and the like.
In a preferred embodiment, the fischer-tropsch oil transfer unit may be a fischer-tropsch oil storage tank or a fischer-tropsch oil transfer pump; preferably, the Fischer-Tropsch oil transfer pump may be selected from, but is not limited to, centrifugal pumps, diaphragm pumps, gear pumps, lobe rotor pumps, and the like.
In a preferred embodiment, when the fischer-tropsch oil delivery unit is a fischer-tropsch oil delivery pump, the fischer-tropsch oil treatment plant described above may further comprise a fischer-tropsch oil storage tank, the fischer-tropsch oil storage tank being fluidly connected to the fischer-tropsch oil cooler and the fischer-tropsch oil delivery unit.
In the Fischer-Tropsch oil treatment equipment, the Fischer-Tropsch oil storage tank and the intermediate oil storage tank can play a buffering role.
In one embodiment, the present invention relates to a process for the removal of solids from a fischer-tropsch oil, wherein the process comprises:
(1) cooling the solid Fischer-Tropsch oil from the Fischer-Tropsch synthesis unit to obtain cooled Fischer-Tropsch oil; and
(2) and conveying the cooled Fischer-Tropsch oil product to the Fischer-Tropsch oil product removing device, and treating to obtain the removed Fischer-Tropsch oil product and solid particle impurities.
In a preferred embodiment, the method further comprises: and (4) sending the solid-removed Fischer-Tropsch oil product into an intermediate oil product storage tank to be used as an intermediate product for processing and refining of a downstream device.
In a preferred embodiment, the temperature of the solid fischer-tropsch oil from the fischer-tropsch synthesis unit can be reduced using a fischer-tropsch oil cooler selected from: a plate cooler or a shell-and-tube cooler, but is not limited thereto.
In a preferred embodiment, the solid content of the solid Fischer-Tropsch oil is in the range of from 1 to 20000 μ g/g, preferably from 20 to 8000 μ g/g.
In a preferred embodiment, the temperature of the cooled fischer-tropsch oil product is 120-220 ℃, preferably 150-190 ℃; thus ensuring that the wax in the fischer-tropsch oil is in a liquid state and has suitable fluidity (i.e. has a suitable viscosity).
In a preferred embodiment, a fischer-tropsch oil delivery pump is used to deliver the cooled fischer-tropsch oil to the fischer-tropsch oil destaticizing device. Preferably, the Fischer-Tropsch oil transfer pump may be selected from, but is not limited to, centrifugal pumps, diaphragm pumps, gear pumps, lobe rotor pumps, and the like.
In a preferred embodiment, the method further comprises: before being conveyed to the Fischer-Tropsch oil product de-immobilizing device, the cooled Fischer-Tropsch oil product is conveyed to a Fischer-Tropsch oil product storage tank so as to buffer the cooled Fischer-Tropsch oil product. Further preferably, the cooled fischer-tropsch oil is conveyed to the fischer-tropsch oil destaticizing device by a fischer-tropsch oil storage tank through nitrogen.
In a preferred embodiment, the pressure of the Fischer-Tropsch oil conveyed to the Fischer-Tropsch oil solid removal device is 0 to 1.0MPa, preferably 0.2 to 0.9MPa, and more preferably 0.3 to 0.8 MPa.
In order to keep good separation efficiency, when the filtration pressure difference (the pressure difference between a feed inlet and a discharge outlet) of the Fischer-Tropsch oil product removing and fixing device reaches a set value, feeding into the Fischer-Tropsch oil product removing and fixing device is stopped, and back flushing operation is carried out on the device. In a preferred embodiment, the set value is not higher than 1.0MPa, preferably not higher than 0.4 MPa. Or in a preferred embodiment, when the Fischer-Tropsch oil product degassing device runs for more than 80 hours, for example 80 to 200 hours, stopping feeding the Fischer-Tropsch oil product degassing device and carrying out back flushing operation on the Fischer-Tropsch oil product degassing device.
In a preferred embodiment, the back-flushing operation may be performed using inert gas and/or clean oil; preferably, the blow-back operation can be carried out with nitrogen and/or a solid-removing Fischer-Tropsch oil. Preferably, the pressure of the back blowing operation is not higher than 0.6MPa, and preferably 0.15-0.5 MPa. Here, the inert gas refers to a gas including nitrogen and a rare gas (e.g., helium, neon, argon, krypton, xenon, or the like). The clean oil used for back flushing can refer to the same or similar oil to be treated. For purposes of the present invention, a clean oil can be a clean oil that is the same as or similar in properties to the solid-containing Fischer-Tropsch oil being treated, such as a solid-depleted Fischer-Tropsch oil (including, for example, Fischer-Tropsch heavy oil, Fischer-Tropsch heavy wax, heavy diesel, etc.).
In a preferred embodiment, the solids content of the solid Fischer-Tropsch oil is < 5. mu.g/g.
By way of exemplary illustration only, FIG. 1 shows a process flow for a solid-containing Fischer-Tropsch oil using the Fischer-Tropsch oil destaticizing device shown in FIG. 2:
sending the solid Fischer-Tropsch oil product from the Fischer-Tropsch synthesis unit into a Fischer-Tropsch oil product cooler for cooling to obtain a cooled Fischer-Tropsch oil product; then, sending the cooled Fischer-Tropsch oil product into a Fischer-Tropsch oil product storage tank;
the Fischer-Tropsch oil in the Fischer-Tropsch oil storage tank is conveyed into the Fischer-Tropsch oil removing and solidifying device by a Fischer-Tropsch oil conveying pump or directly conveyed into the Fischer-Tropsch oil removing and solidifying device by the Fischer-Tropsch oil storage tank by nitrogen, uniformly distributed by a feeding distributor and then flows out downwards or is sprayed out of the distributor; the Fischer-Tropsch oil product discharged from the distributor slowly flows upwards from the lower part of the device, and the solid particles are settled downwards when the Fischer-Tropsch oil product flows upwards due to the fact that the density of the solid particles is higher than that of the Fischer-Tropsch oil product, so that preliminary separation is achieved; the oil-solid pre-separation component arranged in the Fischer-Tropsch oil product ascending channel can accelerate the settling separation of wax liquid and solid impurities; the solid Fischer-Tropsch oil product after primary sedimentation separation flows upwards to a bag type filter, the Fischer-Tropsch oil product enters the interior of a filter bag, an oil product removing and fixing device is discharged for removing the solid Fischer-Tropsch oil product, solid particles are intercepted outside the filter bag, one part of the solid particles is attached to the surface of the filter bag, and the other part of the solid particles is sedimented to the bottom of the oil product removing and fixing device; during the period, the pressure difference and the temperature before and after filtering through the bag filter are measured by the pressure measuring unit arranged on the channel connected to the tank body at the feed inlet and the discharge outlet outside the tank body and the temperature measuring unit connected to the outer surface of the tank body, the operation of the Fischer-Tropsch oil product removing and fixing device can be controlled according to the pressure difference, when the oil product removing and fixing device operates for a certain time or the pressure difference is overhigh, the Fischer-Tropsch oil product removing and fixing device stops feeding, oil products (for example, the removed Fischer-Tropsch oil products) are washed and/or back flushing gas is used for back flushing operation, and solid particles attached to the surface of the bag filter are discharged through the blow-off port after being back flushed;
and (3) conveying the solid content of the solid-removed Fischer-Tropsch oil product with the solid content of less than 5 microgram/g discharged from the discharge hole of the Fischer-Tropsch oil product solid removal device into an intermediate oil product storage tank, and taking the intermediate product as an intermediate product for further processing and refining by a downstream device.
The bag filter is used as a filter element of the solid Fischer-Tropsch oil product, and the filter is made of a specific material and a filter bag with filter precision, so that the solid impurities in the solid Fischer-Tropsch oil product are smoothly intercepted. The bag filter can perform back flushing operation (the filtering parts in the prior art generally have no back flushing function, the effective filtering area of the filtering parts can be gradually reduced along with the prolonging of the running time of the device, the flux can be rapidly reduced after the bag filter is used for a certain time, and a large amount of filter residues can break the filtering parts), the filter bags are back flushed according to the pressure difference between an inlet and an outlet or the running time of the device, the flux is recovered, and the long-period running of the device can be realized. Meanwhile, compared with the existing filtering membrane, metal wire mesh and the like, the filtering bag is cheaper, and the running cost can be saved.
The inventor integrates the feeding distributor and the oil-solid pre-separation component in the lower part of the Fischer-Tropsch oil product retaining device according to the density difference and the oil flow direction of oil and solid impurities, firstly performs sedimentation pre-separation, and then performs filtration, so that the overall operation elasticity can be increased, the filtration processing time can be prolonged, a drain outlet is arranged at the bottommost part of the Fischer-Tropsch oil product retaining device, impurities accumulated in the whole device can be discharged when the bag filter is subjected to back flushing, and the bag filter retaining device is convenient to operate and high in efficiency.
The Fischer-Tropsch oil product solid removal device is particularly suitable for treating solid impurities in Fischer-Tropsch oil products, can avoid the problems in the prior art, and has the characteristics of high separation precision, strong flux recovery capability, suitability for long-period operation, simple and convenient operation and low operation cost.
Exemplary aspects of the present invention may be illustrated by the following numbered paragraphs, but the scope of the present invention is not limited thereto:
1. a Fischer-Tropsch oil product removing and fixing device comprises a tank body and a sealing tank cover which is detachably connected with the tank body;
wherein, a feeding distributor, an oil-solid pre-separation component and a bag filter are arranged in the tank body from bottom to top in sequence; the bag filter consists of a filter bag and a filter bag framework, and the filter bag is sleeved outside the filter bag framework; the material of the filter bag comprises viscose fiber, polyester, nylon, polyaramide, polytetrafluoroethylene, polyphenylene sulfide, aramid fiber and/or glass fiber; the filtering precision of the bag filter is 0.5-50 microns;
the feed inlet and the purging port are positioned on the same side of the lower part of the tank body and are connected to the feed distributor in a fluid communication manner through the same channel;
the discharge port and the back flushing port are positioned on the same side of the upper part of the tank body and are connected to the bag filter in a fluid communication manner through the same channel;
the pressure detection units are respectively arranged on the channels of the feed port and the discharge port, which are communicated with the tank body, and on the outer surface of the tank body;
the temperature detection unit is arranged on the outer surface of the tank body;
the device comprises a sewage draining port and a venting port, wherein the sewage draining port and the venting port are respectively arranged at the bottom of the tank body and the top of the tank cover; and
and the outer surfaces of the tank body and the tank cover are provided with heat preservation heat tracing units.
2. The fischer-tropsch oil de-immobilizing device of paragraph 1 wherein the seal pot cover is detachably connected to the pot body by a flanged connection.
3. The fischer-tropsch oil destabilising device of paragraph 1 or 2, wherein the feed distributor comprises a single pipe distributor, a notched distributor, a calandria distributor, a central pipe distributor or a multi-ring pipe liquid distributor.
4. The Fischer-Tropsch oil deinstalling device of any one of paragraphs 1 to 3, wherein the outlets of the single-tube distributor and the notched distributor face downwards.
5. The Fischer-Tropsch oil product de-immobilizing device of any one of paragraphs 1 to 3, wherein the bottom of the distribution pipe of the calandria distributor, the central pipe distributor and the multi-ring pipe distributor is provided with liquid discharge holes which form an angle of more than 0 degree with the horizontal direction.
6. The Fischer-Tropsch oil product deinstalling device of paragraph 5, wherein the angle of the drainage holes to the horizontal direction is 20-160 degrees, preferably 30-120 degrees.
7. The Fischer-Tropsch oil product destaticizing device as in paragraph 6 or 7, wherein the aperture of the liquid discharge hole is 3-25 mm, preferably 5-20 mm.
8. The Fischer-Tropsch oil product deinstalling device of any one of paragraphs 1 to 7, wherein the oil-solid pre-separation component is of a swash plate type structure or a baffle plate type structure.
9. The Fischer-Tropsch oil product removing and immobilizing device as in any one of paragraphs 1 to 8, wherein the filter bag framework is a cylindrical framework, a U-shaped framework or a candle filter framework.
10. The Fischer-Tropsch oil product destaticizing device of any one of paragraphs 1 to 9, wherein the number of the filter bags is the same as that of the filter bag frameworks and is more than 1.
11. The fischer-tropsch oil deinstalling device of paragraph 10, wherein a plurality of the bag filters are arranged side-by-side.
12. The fischer-tropsch oil de-immobilizing device of any one of paragraphs 1-11, wherein the filter bag skeleton is made of a material selected from: carbon steel, stainless steel and/or alloy steel.
13. The fischer-tropsch oil de-immobilizing device of any one of paragraphs 1-12, wherein the filter bag is made of a material selected from viscose, polyester, polyaramid, polytetrafluoroethylene, and/or fiberglass.
14. The Fischer-Tropsch oil product degassing device of any one of paragraphs 1-13, wherein the bag filter has a filtration accuracy of 1-30 microns, preferably 2-25 microns.
15. The fischer-tropsch oil de-immobilizing device of any one of paragraphs 1 to 14, wherein the outlets of the filter bags of each row or each column are fluidly connected to a same sub-conduit, and the sub-conduits converge to a same channel and are fluidly connected to the outlet and the blowback port.
16. The fischer-tropsch oil de-immobilizing device of paragraph 15 wherein a sampler is provided on each of the sub-conduits before converging to the same channel.
17. The Fischer-Tropsch oil product deinstalling device of any one of paragraphs 1 to 16, wherein the feed inlets are arranged in parallel or vertically, preferably in parallel, outside the tank.
18. The fischer-tropsch oil deinstalling device of any one of paragraphs 1 to 17, wherein the outlet is arranged in parallel or vertically, preferably in parallel, outside the tank cover.
19. The fischer-tropsch oil deinstalling device of any one of paragraphs 1 to 18, wherein a blowdown window is provided at the blowdown port.
20. A fischer-tropsch oil treatment plant, wherein the plant comprises:
a Fischer-Tropsch oil cooler;
a Fischer-Tropsch oil delivery unit connected to the Fischer-Tropsch oil cooler in fluid communication; and
the Fischer-Tropsch oil product deinstalling device of any one of paragraphs 1-19, wherein the Fischer-Tropsch oil product deinstalling device is connected to the Fischer-Tropsch oil product conveying unit in a fluid communication manner.
21. The fischer-tropsch oil treatment facility of paragraph 20 wherein the fischer-tropsch oil treatment facility further comprises an intermediate oil storage tank fluidly connected to the fischer-tropsch oil destaticizing device.
22. The fischer-tropsch oil treatment plant of paragraph 20 or 21 wherein the fischer-tropsch oil cooler is a plate cooler or a shell and tube cooler.
23. The fischer-tropsch oil treatment plant of any one of paragraphs 20 to 22, wherein the fischer-tropsch oil delivery unit is a fischer-tropsch oil storage tank or a fischer-tropsch oil delivery pump.
24. The fischer-tropsch oil treatment plant of paragraph 23 wherein the fischer-tropsch oil delivery pump is selected from a centrifugal pump, a diaphragm pump, a gear pump or a lobe rotor pump.
25. The fischer-tropsch oil treatment facility of any one of paragraphs 20 to 24, wherein, when the fischer-tropsch oil delivery unit is a fischer-tropsch oil delivery pump, the fischer-tropsch oil treatment facility may further comprise a fischer-tropsch oil storage tank that is connected in fluid communication to the fischer-tropsch oil cooler and the fischer-tropsch oil delivery unit.
26. A Fischer-Tropsch oil product de-solidification method, wherein the method comprises the following steps:
(1) cooling the solid Fischer-Tropsch oil from the Fischer-Tropsch synthesis unit to obtain cooled Fischer-Tropsch oil; and
(2) and conveying the cooled Fischer-Tropsch oil product to a Fischer-Tropsch oil product removing device in any one of the sections 1-19, and treating to obtain the removed Fischer-Tropsch oil product and solid particle impurities.
27. The method of paragraph 26, wherein the method further comprises: and sending the solid removal Fischer-Tropsch oil product into an intermediate oil product storage tank.
28. The method of paragraph 26 or 27, wherein the temperature of the solid fischer-tropsch oil from the fischer-tropsch synthesis unit is reduced using a fischer-tropsch oil cooler selected from the group consisting of: plate coolers or shell and tube coolers.
29. The method of any of paragraphs 26 to 28, wherein the solid content of the solid-containing Fischer-Tropsch oil is 1 to 20000 μ g/g, preferably 20 to 8000 μ g/g.
30. The method of any of paragraphs 26 to 29, wherein the temperature of the cooled fischer-tropsch oil is from 120 to 220 ℃, preferably from 150 to 190 ℃.
31. The method of any of paragraphs 26-30, wherein the cooled fischer-tropsch oil is transported to the fischer-tropsch oil destaticizing device using a fischer-tropsch oil transport pump.
32. The method of paragraph 31 wherein said Fischer-Tropsch oil transfer pump is selected from the group consisting of a centrifugal pump, a diaphragm pump, a gear pump, and a lobe rotor pump.
33. The method of any of paragraphs 26-32, wherein the method further comprises: and before being conveyed to the Fischer-Tropsch oil product solid removal device, the cooled Fischer-Tropsch oil product is conveyed to a Fischer-Tropsch oil product storage tank.
34. The method of paragraph 33, wherein the cooled fischer-tropsch oil is transported to the fischer-tropsch oil destaticizing device via the fischer-tropsch oil storage tank with nitrogen.
35. The method of any of paragraphs 26-34, wherein the pressure of the Fischer-Tropsch oil delivered to the Fischer-Tropsch oil destaticizing device is from 0 to 1.0MPa, preferably from 0.2 to 0.9MPa, more preferably from 0.3 to 0.8 MPa.
36. The method of any of paragraphs 26-35, wherein when the filtration pressure differential across the fischer-tropsch oil perimeter removal device reaches a set point as follows, stopping feeding the fischer-tropsch oil perimeter removal device and performing a blow back operation on the fischer-tropsch oil perimeter removal device: not higher than 1.0MPa, preferably not higher than 0.4 MPa.
37. The method of any of paragraphs 26-35, wherein when the fischer-tropsch oil perimeter removal device is operating for more than 80 hours, preferably 80 to 200 hours, feeding to the fischer-tropsch oil perimeter removal device is stopped and a blow back operation is performed on the fischer-tropsch oil perimeter removal device.
38. The method of paragraph 36 or 37, wherein the back flushing operation is performed with inert gas and/or clean oil; preferably, the back-flushing operation is performed with nitrogen and/or the de-solidified Fischer-Tropsch oil.
39. The method as claimed in any of paragraphs 36-38, wherein the pressure of the back-flushing operation is not higher than 0.6MPa, preferably 0.15-0.5 MPa.
40. A method as claimed in any one of paragraphs 26 to 39, wherein said solid Fischer-Tropsch oil has a solids content of <5 μ g/g.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Examples
Example 1
Cooling a solid Fischer-Tropsch oil (the solid content is 20-40 mu g/g) from a Fischer-Tropsch synthesis unit to 160-170 ℃ through a Fischer-Tropsch oil plate cooler; and the cooled Fischer-Tropsch oil product enters a Fischer-Tropsch oil product storage tank and is conveyed to the Fischer-Tropsch oil product removing and fixing device by a centrifugal pump, and the feeding pressure is 0.3MPa to 0.4 MPa.
Solid Fischer-Tropsch oil products enter the device through a feed inlet of the Fischer-Tropsch oil product solid removal device, slowly flow upwards after flowing out from a liquid discharge hole (forming 30 degrees with the horizontal direction and having the aperture of 5mm) at the bottom of the calandria distributor, flow through a baffle plate type pre-separation component for sedimentation separation, enter a bag filter (a cylindrical viscose fiber filter bag with the filtering precision of 2 mu m, wherein the filter bag framework is made of stainless steel), the Fischer-Tropsch oil products discharged from the filter are discharged out of the device through a discharge outlet, and the solid content of the Fischer-Tropsch oil products discharged from the device is 2 mu g/g; and (3) intercepting solid particles at the outer side of the filter bag, introducing nitrogen from a back-blowing port after running for 200 hours to back-blow the filter bag (with the operating pressure of 0.15-0.2 MPa), and blowing the solid particles attached to the filter bag and the solid particles settled to the bottom of the device out of the device through a sewage outlet.
And the Fischer-Tropsch oil product out of the Fischer-Tropsch oil product removing device enters an intermediate oil product storage tank and then enters a downstream device for further processing and refining as an intermediate product.
Example 2
Cooling a solid Fischer-Tropsch oil (the solid content is 50-100 mu g/g) from a Fischer-Tropsch synthesis unit to 150-160 ℃ through a Fischer-Tropsch oil plate cooler; and the cooled Fischer-Tropsch oil product enters a Fischer-Tropsch oil product storage tank and is then pumped to the Fischer-Tropsch oil product removing and fixing device by a gear pump, wherein the feeding pressure is 0.3MPa to 0.40 MPa.
Solid-containing Fischer-Tropsch oil enters the device through a feed inlet of the Fischer-Tropsch oil removing device, slowly flows upwards after flowing out from a liquid discharge hole (forming 60 degrees with the horizontal direction and having the aperture of 12mm) at the bottom of the central tube distributor, flows through the inclined plate type pre-separation component for sedimentation separation, the solid-containing Fischer-Tropsch oil after primary separation enters a bag filter (a U-shaped glass fiber filter bag with the filtering precision of 5 mu m, the material of the framework of the filter bag is alloy steel), the Fischer-Tropsch oil discharged from the filter is discharged out of the device through a discharge outlet, and the solid content of the Fischer-Tropsch oil discharged out of the device is 3 mu g/g; and solid particles are intercepted at the outer side of the filter bag, after the filter bag runs for 150 hours, an intermediate oil product is introduced from a back-blowing port to back-clean the filter bag (the operating pressure is 0.2-0.25 MPa), and the solid particles attached to the filter bag are back-washed off and then discharged out of the device together with the solid particles settled to the bottom of the device through a sewage outlet.
And the Fischer-Tropsch oil product out of the Fischer-Tropsch oil product removing device enters an intermediate oil product storage tank and then enters a downstream device for further processing and refining as an intermediate product.
Example 3
Cooling a solid Fischer-Tropsch oil (the solid content is 300-400 mu g/g) from a Fischer-Tropsch synthesis unit to 170-180 ℃ through a Fischer-Tropsch oil shell-and-tube cooler; and the cooled Fischer-Tropsch oil product enters a Fischer-Tropsch oil product storage tank and is then pumped to the Fischer-Tropsch oil product removing and fixing device by a diaphragm pump, wherein the feeding pressure is 0.5MPa to 0.6 MPa.
Solid Fischer-Tropsch oil products enter the device through a feed inlet of the Fischer-Tropsch oil product removing device, slowly flow upwards after flowing out from a liquid discharge hole (forming 120 degrees with the horizontal direction and having the aperture of 20mm) at the bottom of the multi-ring pipe type distributor, flow through a baffle plate type pre-separation component for sedimentation separation, enter a bag type filter (a cylindrical polyaramide filter bag with the filtering precision of 10 mu m, wherein the material of a filter bag framework is carbon steel), the Fischer-Tropsch oil products discharged from the filter are discharged out of the device through a discharge outlet, and the solid content of the Fischer-Tropsch oil products discharged out of the device is 4 mu g/g; the solid particles are intercepted at the outer side of the filter bag, the filter bag is subjected to back blowing (with the operating pressure of 0.3-0.35 MPa) when the filtering pressure difference reaches 0.4MPa, and the solid particles attached to the filter bag and the solid particles settled to the bottom of the device are blown out of the device through a sewage outlet.
And the Fischer-Tropsch oil product out of the Fischer-Tropsch oil product removing device enters an intermediate oil product storage tank and then enters a downstream device for further processing and refining as an intermediate product.
Example 4
Cooling a solid Fischer-Tropsch oil product (the solid content is 1000-2000 mu g/g) from a Fischer-Tropsch synthesis unit to 180-190 ℃ by a Fischer-Tropsch oil product shell-and-tube cooler; and feeding the cooled Fischer-Tropsch oil product into a Fischer-Tropsch oil product storage tank, and conveying the Fischer-Tropsch oil product to a Fischer-Tropsch oil product removing and fixing device by using nitrogen under the feeding pressure of 0.6 to 0.7 MPa.
The solid Fischer-Tropsch oil product enters the device through a feed inlet of the Fischer-Tropsch oil product destaticizing device, flows out from a downward outlet of the gap type distributor, slowly flows upwards, flows through the inclined plate type pre-separation component for sedimentation separation, and enters a bag type filter (a polytetrafluoroethylene filter bag with the filtering precision of 20 mu m, wherein the filter bag framework is a candle type filter and is made of stainless steel), the Fischer-Tropsch oil product discharged from the filter is discharged out of the device through a discharge outlet, and the solid content of the Fischer-Tropsch oil product discharged out of the device is 4 mu g/g; the solid particles are intercepted at the outer side of the filter bag, after the filtering pressure difference reaches 0.4MPa, intermediate oil is introduced from the back-blowing port to back-clean the filter bag (the operating pressure is 0.3-0.4 MPa), and the solid particles attached to the filter bag are back-washed off and then discharged out of the device together with the solid particles settled to the bottom of the device through the sewage outlet.
And the Fischer-Tropsch oil product out of the Fischer-Tropsch oil product removing device enters an intermediate oil product storage tank and then enters a downstream device for further processing and refining as an intermediate product.
Example 5
Cooling a solid Fischer-Tropsch oil (with the solid content of 7000-8000 mu g/g) from a Fischer-Tropsch synthesis unit to 170-180 ℃ by a Fischer-Tropsch oil shell-and-tube cooler; and feeding the cooled Fischer-Tropsch oil product into a Fischer-Tropsch oil product storage tank, and conveying the Fischer-Tropsch oil product to a Fischer-Tropsch oil product removing and fixing device by using nitrogen under the feeding pressure of 0.7MPa to 0.8 MPa.
The solid Fischer-Tropsch oil product enters the device through a feed inlet of the Fischer-Tropsch oil product destaticizing device, flows out from a downward outlet of the single-tube distributor, slowly flows upwards, flows through a baffle plate type pre-separation component for sedimentation separation, enters a bag filter (a polyester filter bag with the filtration precision of 25 mu m, wherein the filter bag framework is a candle filter and is made of alloy steel), and is discharged out of the device through a discharge outlet, and the solid content of the Fischer-Tropsch oil product discharged out of the device is 4 mu g/g; and (3) intercepting solid particles at the outer side of the filter bag, introducing nitrogen from a back-blowing port after running for 80 hours to back-blow the filter bag (with the operating pressure of 0.4-0.5 MPa), and blowing the solid particles attached to the filter bag and the solid particles settled to the bottom of the device out of the device through a sewage outlet.
And the Fischer-Tropsch oil product out of the Fischer-Tropsch oil product removing device enters an intermediate oil product storage tank and then enters a downstream device for further processing and refining as an intermediate product.
Claims (10)
1. A Fischer-Tropsch oil product removing and fixing device comprises a tank body and a sealing tank cover which is detachably connected with the tank body;
wherein, a feeding distributor, an oil-solid pre-separation component and a bag filter are arranged in the tank body from bottom to top in sequence; the bag filter consists of a filter bag and a filter bag framework, and the filter bag is sleeved outside the filter bag framework; the material of the filter bag comprises viscose fiber, polyester, nylon, polyaramide, polytetrafluoroethylene, polyphenylene sulfide, aramid fiber and/or glass fiber; the filtering precision of the bag filter is 0.5-50 microns;
the feed inlet and the purging port are positioned on the same side of the lower part of the tank body and are connected to the feed distributor in a fluid communication manner through the same channel;
the discharge port and the back flushing port are positioned on the same side of the upper part of the tank body and are connected to the bag filter in a fluid communication manner through the same channel;
the pressure detection units are respectively arranged on the channels of the feed port and the discharge port, which are communicated with the tank body, and on the outer surface of the tank body;
the temperature detection unit is arranged on the outer surface of the tank body;
the device comprises a sewage draining port and a venting port, wherein the sewage draining port and the venting port are respectively arranged at the bottom of the tank body and the top of the tank cover; and
and the outer surfaces of the tank body and the tank cover are provided with heat preservation heat tracing units.
2. The fischer-tropsch oil destacking apparatus of claim 1, wherein the seal pot cover is detachably connected to the tank body by a flanged connection;
preferably, the feed distributor comprises a single-pipe distributor, a notched distributor, a calandria distributor, a central pipe distributor, or a multi-pipe liquid distributor;
preferably, the outlet of the single-tube distributor and the notch distributor faces downwards;
or preferably, the bottom of the distribution pipe of the calandria distributor, the central pipe distributor and the multi-ring pipe distributor is provided with a liquid discharge hole which forms an angle of more than 0 degree with the horizontal direction;
preferably, the angle between the liquid discharge hole and the horizontal direction is 20-160 degrees, preferably 30-120 degrees;
more preferably, the aperture of the liquid discharge hole is 3-25 mm, preferably 5-20 mm;
preferably, the oil-solid pre-separation component is of a swash plate type structure or a baffle plate type structure;
preferably, the filter bag framework is a cylindrical framework, a U-shaped framework or a candle filter framework;
preferably, the number of the filter bags and the number of the filter bag frameworks are the same and are more than 1;
preferably, a plurality of the bag filters are arranged in parallel;
preferably, the filter bag framework is made of materials selected from the following materials: carbon steel, stainless steel and/or alloy steel;
preferably, the material of the filter bag is selected from viscose fiber, polyester, polyaramide, polytetrafluoroethylene and/or glass fiber;
preferably, the filtration precision of the bag filter is 1-30 microns, preferably 2-25 microns.
3. The fischer-tropsch oil destabilising device of claim 1 or 2, wherein the outlets of the filter bags of each row or column are fluidly connected to the same sub-conduit, and the sub-conduits converge to the same channel and are fluidly connected to the outlet and the blowback port;
preferably, before being converged to the position of the same channel, a sampler is respectively arranged on each branch pipeline;
preferably, the feed inlets are arranged in parallel or vertically outside the tank body, preferably in parallel;
preferably, the discharge ports are arranged in parallel or vertically, preferably in parallel, outside the tank cover;
preferably, a drainage window is arranged at the drainage port.
4. A fischer-tropsch oil treatment plant, wherein the plant comprises:
a Fischer-Tropsch oil cooler;
a Fischer-Tropsch oil delivery unit connected to the Fischer-Tropsch oil cooler in fluid communication; and
the Fischer-Tropsch oil deinstalling device of any one of claims 1 to 3, connected in fluid communication to the Fischer-Tropsch oil transfer unit.
5. The Fischer-Tropsch oil treatment plant of claim 4, further comprising an intermediate oil storage tank fluidly connected to the Fischer-Tropsch oil destaticizing device.
6. Fischer-Tropsch oil treatment plant according to claim 4 or 5, wherein said Fischer-Tropsch oil cooler is a plate cooler or a shell-and-tube cooler;
preferably, the Fischer-Tropsch oil product conveying unit is a Fischer-Tropsch oil product storage tank or a Fischer-Tropsch oil product conveying pump;
further preferably, the Fischer-Tropsch oil transfer pump is selected from a centrifugal pump, a diaphragm pump, a gear pump or a cam rotor pump;
in addition, preferably, when the fischer-tropsch oil conveying unit is a fischer-tropsch oil conveying pump, the fischer-tropsch oil treatment device may further include a fischer-tropsch oil storage tank, and the fischer-tropsch oil storage tank is connected to the fischer-tropsch oil cooler and the fischer-tropsch oil conveying unit in a fluid communication manner.
7. A Fischer-Tropsch oil product de-solidification method, wherein the method comprises the following steps:
(1) cooling the solid Fischer-Tropsch oil from the Fischer-Tropsch synthesis unit to obtain cooled Fischer-Tropsch oil; and
(2) conveying the cooled Fischer-Tropsch oil product to the Fischer-Tropsch oil product removing device of any one of claims 1 to 3, and treating to obtain the removed Fischer-Tropsch oil product and solid particle impurities.
8. The method of claim 7, wherein the method further comprises: and sending the solid removal Fischer-Tropsch oil product into an intermediate oil product storage tank.
9. The process of claim 7 or 8, wherein the temperature of the solid fischer-tropsch oil from the fischer-tropsch synthesis unit is reduced using a fischer-tropsch oil cooler selected from the group consisting of: plate coolers or shell-and-tube coolers;
preferably, the solid content of the solid-containing Fischer-Tropsch oil product is 1-20000 mug/g, preferably 20-8000 mug/g;
further preferably, the temperature of the cooled Fischer-Tropsch oil product is 120-220 ℃, and preferably 150-190 ℃;
preferably, a Fischer-Tropsch oil conveying pump is used for conveying the cooled Fischer-Tropsch oil to the Fischer-Tropsch oil removing device;
preferably, the Fischer-Tropsch oil transfer pump is selected from a centrifugal pump, a diaphragm pump, a gear pump or a lobe rotor pump.
10. The method of any one of claims 7-9, wherein the method further comprises: before being conveyed to the Fischer-Tropsch oil product solid removal device, the cooled Fischer-Tropsch oil product is conveyed to a Fischer-Tropsch oil product storage tank;
preferably, the cooled Fischer-Tropsch oil is conveyed to the Fischer-Tropsch oil destaticizing device by the Fischer-Tropsch oil storage tank through nitrogen;
preferably, the pressure of the Fischer-Tropsch oil conveyed to the Fischer-Tropsch oil solid removing device is 0-1.0 MPa, preferably 0.2-0.9 MPa, and more preferably 0.3-0.8 MPa;
preferably, when the filtering pressure difference of the Fischer-Tropsch oil product removing device reaches the following set value, stopping feeding the Fischer-Tropsch oil product removing device and carrying out back flushing operation on the Fischer-Tropsch oil product removing device: not higher than 1.0MPa, preferably not higher than 0.4 MPa;
or preferably, when the Fischer-Tropsch oil product removing device operates for more than 80 hours, preferably 80 to 200 hours, stopping feeding the Fischer-Tropsch oil product removing device and carrying out back flushing operation on the Fischer-Tropsch oil product removing device;
preferably, inert gas and/or clean oil are/is adopted for carrying out the back flushing operation; preferably, nitrogen and/or the solid removal Fischer-Tropsch oil product is/are adopted for carrying out the back flushing operation;
further preferably, the pressure of the back blowing operation is not higher than 0.6MPa, preferably 0.15-0.5 MPa;
preferably, the solids content of the solid-depleted Fischer-Tropsch oil is <5 mug/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458816.4A CN111647421B (en) | 2020-05-27 | 2020-05-27 | Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458816.4A CN111647421B (en) | 2020-05-27 | 2020-05-27 | Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111647421A true CN111647421A (en) | 2020-09-11 |
| CN111647421B CN111647421B (en) | 2022-03-11 |
Family
ID=72344704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010458816.4A Active CN111647421B (en) | 2020-05-27 | 2020-05-27 | Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111647421B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897218A (en) * | 2021-09-01 | 2022-01-07 | 中科合成油技术股份有限公司 | Continuous solid-liquid separation method and separation system for Fischer-Tropsch synthesis solid-containing intermediate product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2348906Y (en) * | 1997-12-11 | 1999-11-17 | 尤俊洪 | Bag type filter |
| CN101209403A (en) * | 2006-12-27 | 2008-07-02 | 中国石油化工股份有限公司 | Method and equipment for liquid-solid continuously separation for slurry state bed reactor |
| CN103041635A (en) * | 2012-11-29 | 2013-04-17 | 黎明化工研究设计院有限责任公司 | Solid-liquid separation bag type filter |
| CN108926884A (en) * | 2018-07-23 | 2018-12-04 | 上海兖矿能源科技研发有限公司 | A kind of filter device for the filtering of high temperature fischer-tropsch synthetic oil |
| CN111187636A (en) * | 2018-11-15 | 2020-05-22 | 国家能源投资集团有限责任公司 | System and method for separating catalyst in Fischer-Tropsch synthesis heavy wax |
-
2020
- 2020-05-27 CN CN202010458816.4A patent/CN111647421B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2348906Y (en) * | 1997-12-11 | 1999-11-17 | 尤俊洪 | Bag type filter |
| CN101209403A (en) * | 2006-12-27 | 2008-07-02 | 中国石油化工股份有限公司 | Method and equipment for liquid-solid continuously separation for slurry state bed reactor |
| CN103041635A (en) * | 2012-11-29 | 2013-04-17 | 黎明化工研究设计院有限责任公司 | Solid-liquid separation bag type filter |
| CN108926884A (en) * | 2018-07-23 | 2018-12-04 | 上海兖矿能源科技研发有限公司 | A kind of filter device for the filtering of high temperature fischer-tropsch synthetic oil |
| CN111187636A (en) * | 2018-11-15 | 2020-05-22 | 国家能源投资集团有限责任公司 | System and method for separating catalyst in Fischer-Tropsch synthesis heavy wax |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897218A (en) * | 2021-09-01 | 2022-01-07 | 中科合成油技术股份有限公司 | Continuous solid-liquid separation method and separation system for Fischer-Tropsch synthesis solid-containing intermediate product |
| CN113897218B (en) * | 2021-09-01 | 2024-01-02 | 中科合成油技术股份有限公司 | Continuous solid-liquid separation method and separation system for Fischer-Tropsch synthesis solid-containing intermediate product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111647421B (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2788917Y (en) | Caustic or emulsion circulating purifier for steel rolling | |
| CN111647421B (en) | Fischer-Tropsch oil product de-immobilizing device, equipment comprising same and treatment method | |
| CN111018193A (en) | Sewage treatment system based on swirler | |
| CN112794475A (en) | Oil-containing phenol water separation process method | |
| US5252230A (en) | Granulated filter for the filtration of fine graded suspensions | |
| CN113135611B (en) | Oil-water separation pretreatment device for Fischer-Tropsch synthesis water, equipment comprising oil-water separation pretreatment device and treatment method | |
| CN215480108U (en) | Air-floatation oil removal device for coking residual ammonia water dissolved air | |
| AU2009207850A1 (en) | Method and plant for removing accumulating slag from a slag bath | |
| CN114477370A (en) | Device and method for removing oil and suspension of phenol-ammonia wastewater by coalescence and filtration of heterogeneous medium | |
| US4111814A (en) | Oil filter | |
| RU2254297C2 (en) | Apparatus for flotation-filtration purification of water | |
| CN102319523B (en) | Mini-hydrocyclone solid removing method and device for medium oil in fractionating tower of ethylene unit | |
| CN215627213U (en) | Oil-containing phenol water separation device | |
| CN112624471A (en) | Short-process coal gasification black water purification method and device | |
| CN115215460B (en) | Water saving method and device for hydrocracking device | |
| CN211770421U (en) | Regeneration-free resin oil removal and filtration device | |
| CN218435328U (en) | Oil removing system for phenol-ammonia wastewater | |
| CN215905904U (en) | Ceramic membrane filter and oily sewage pretreatment device | |
| CN218146278U (en) | Denitrification deep bed filter | |
| CN215250194U (en) | Acidic water dealkylation device | |
| CN217459030U (en) | High-efficient whirl filter equipment of coking wastewater | |
| CN214597405U (en) | Solid-liquid separation device and separation tower | |
| CN217458919U (en) | High-efficient coalescence deoiling device of coking wastewater | |
| CZ292144B6 (en) | Process for cleaning the machining liquid of an electrical-erosion metal-machining process and apparatus for making the same | |
| CN216909324U (en) | Filtering and recycling device for acrylate rubber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 101407 Zhongke synthetic oil R & D base, No. 1, south 2nd Street, Yueyuan, C District, Yanqi Development Zone, Huairou District, Beijing Applicant after: Zhongke synthetic oil Technology Co.,Ltd. Address before: 101407 Zhongke synthetic oil R & D base, No. 1, south 2nd Street, Yueyuan, C District, Yanqi Development Zone, Huairou District, Beijing Applicant before: SYNFUELS CHINA TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |